my understanding of copyright is that one is not permitted to copy anothers' original works, to sell, lend, lease or give away, without the owners permission. It covers many things, no doubt including fabric prints, quilting patterns, embroidery designs, computer programs and the list goes on. In most cases, one can use these products to make a small number of items for sale, not mass-produce them, eg making bags or stuffed dollys and toys is ok, as long as you purchase a pattern, or create your own originals, and don't copy someone else's.
hope this helps